Kenwood FZDA07ELEF2 Service Manual page 18

FZDA07ELEF2/EREF2/MRHF2
MICROCOMPUTER'S TERMINAL DESCRIPTION
Truth Value Table
q VIDEO_SW logic for RSE
VIDEO_SW to be adopted: BA7649F (Manufactured by ROHM)
Video selection control signal
R_SW1
CTL-A
L
L
H
H
∗
"∗": Can use any one of Lo or Hi
w Setup of destination
TYPE 1 (77Pin)
Information on the type of vehicles
L
L
L
L
H
H
H
H
e Satellite SW voltage specifi cation
1) Rated voltage: 5V
2) Rated voltage: See the next table
3) Chattering period of time: 10ms or less
• Take the fl uctuation in power supply voltage into account (4.75V~5.25V).
4) Range of output voltage
V2=V1Ra/(Rp+Ra)
• Resistance of SRC: MAX 1.0Ω
• Resistance of BHD harness wire: MAX 0.2Ω
• Take the fl uctuation in voltage into account (4.75V~5.25V).
• Calculate the range taking the tolerance in resister (±2%) into account to allow the margin in voltage determination
0V
18
R_SW2 R_SW3
CTL-B CTL-C
L don't care
H don't care
L don't care
H don't care
∗ H
TYPE 2 (75Pin)
Destination information
L
L
H
H
L
L
H
H
Ra=R1+(1/((1/R8)+(1/R2+...+R7)))
=R1+R8(R2+...+R7)/(R2+...R8)
MUTE VOL+ VOL-
operation operation operation
1.18 1.40 1.65 1.95
CORE2 input video
JP EU/US/AUS
TV No setting
VIDEO-IN VIDEO-IN
DVD
(1seg) No setting
DTV-IN
TYPE 3 (73Pin)
Type of vehicle
L
H
L
H
L
H
L
H
MODE SEEK
operation operation
2.21 2.56 2.71 3.11 3.26
← SYSTEM µ-com terminal name
← VIDEO_SW IC terminal name
DVD
(MUTE)
Destination
Japan
Europe
D07
North America
Australia
Japan
Europe (Right side steering wheel)
A07
Europe (Left side steering wheel)
Australia
SEEK No
operation operation
3.70 3.78 4.25 4.46 4.95
5V